< p > the hairiness of yarn surface mainly arises from the spinning process and grows in the winding process.

The length and quantity of yarn hairiness are directly related to the properties of raw materials, the cotton blending scheme, the short staple rate, the technological parameters, and the internal quality of the semi-finished products fed by each process, and are also affected by the state of the equipment, the workshop environment, the operation level of the truck operators, and the management level of the workshop.

There are many researches on yarn surface hairiness control from spinning process, but it is not enough to reduce yarn surface hairiness in warping process.

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< p > > a href= "//m.pmae.cn/news/index_c.asp" > yarn > /a > hairiness has many factors. A href= "//m.pmae.cn/news/index_c.asp" > warping machine "/a" is one of them.

The traditional 1452 A warping machine is driven by a roller friction drive shaft. Because of the inertia of the shaft, the warp shaft does not stop completely when it stops. The shaft will slip on the roller, so that the surface of the yarn will be worn and the hairiness will be increased.

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< p > for the new warping machine, such as the Benin warp knitting machine, the driving mode can effectively reduce the occurrence of warp yarn lifting due to the pmission mode of the a href= "//m.pmae.cn/news/index_c.asp" motor less than /a drive hydraulic pressure regulating pump and the variable speed motor stepless speed regulating direct drive shaft.

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< p > followed by warping tension.

In the warping, due to the consideration of uniform yarn tension, the weight of the tension washer arranged on different positions of the cheese rack is different, and the influence on yarn hairiness is different.

The warping tension increased with the weight of the tension washer and the number of feather roots increased.

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< p > warping speed will also affect yarn hairiness.

We take 14.5 tex polyester cotton blended yarn as an example to test. The results show that the number of feather roots increases with the increase of warping speed.

This is because the warping tension is also increasing after the speed increases, and the friction between the yarn and the guide yarn components on the warping machine is intensified, and the surface hairiness of the yarn body increases.

The distance between warp ends is the distance between the top of the bobbin and the guide eye.

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< p > when the warping speed is constant, there must be a distance between the guide yarns and the tension is the minimum.

The distance is usually 180~200 millimeters.

Due to the difference in yarn guide distance and warp tension, the hairiness is different.

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< p > a certain warping machine can reduce hairiness from three aspects: first, the tension is properly configured to ensure uniform tension and flexible rotary components; second, the smooth surface of the guide yarn components, no cracks and breakage, and little friction to the yarn; third, the speed and the tension washer are matched.

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